van der Meer, Jaap (2000): Lithology description, textural and structural observations, and indications for ground ice of sediment core CRP-2 (Table 1-4) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.451856, Supplement to: van der Meer, J (2000): Microscopic observations on the frist 300 metres of CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(3), 339-348, hdl:10013/epic.28271.d001
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Abstract:
From the upper 300 m of CRP-2/2A, twenty-six samples of diamicts and deformation structures have been thin sectioned. These have been analysed for texture, structure, diagenesis and plasmic fabric. The combination of certain microstructures (e.g. turbate and linear) and plasmic fabric development is indicative of grounded ice. Clear evidence for two grounded ice events (three samples) was found in the upper Oligocene part of the core. The interpretation of ten more samples is less certain, but as for CRP-1, is taken to point to grounded ice as well. There is a strong correlation between these indications for grounded ice and the basal part of cycles in the sequence stratigraphy.
Project(s):
Cape Roberts Project (CRP)
Coverage:
Latitude: -77.005982 * Longitude: 163.719450
Date/Time Start: 1998-10-01T00:00:00 * Date/Time End: 1998-11-25T14:20:00
Minimum DEPTH, sediment/rock: 13.660 m * Maximum DEPTH, sediment/rock: 300.050 m
Event(s):
CRP-2 (14.2 km at 096° true from Cape Roberts) * Latitude: -77.005983 * Longitude: 163.719450 * Date/Time: 1998-10-01T00:00:00 * Elevation: -177.9 m * Recovery: 57.42 m * Location: off Cape Roberts, Ross Sea, Antarctica * Campaign: CRP-2 * Basis: Sampling/drilling from ice * Method/Device: Core wireline system (CWS) * Comment: 921 m at 284° from CRP-1. Sea-ice thickness: 2.0 m (1 Oct) to 2.2 m (23 Nov). Sea riser embedded to 13.03 mbsf. Lateral ice movement: 9.87 m to east from 17 Oct to 23 Nov. HQ core to 199.31 mbsf. NQ core to 624.15 mbsf
CRP-2A (14.2 km at 096° true from Cape Roberts) * Latitude: -77.005980 * Longitude: 163.719450 * Date/Time Start: 1998-10-16T07:30:00 * Date/Time End: 1998-11-25T14:20:00 * Elevation: -177.9 m * Recovery: 624 m * Location: off Cape Roberts, Ross Sea, Antarctica * Campaign: CRP-2 * Basis: Sampling/drilling from ice * Method/Device: Core wireline system (CWS) * Comment: 921 m at 284° from CRP-1. Sea-ice thickness: 2.0 m (1 Oct) to 2.2 m (23 Nov). Sea riser embedded to 13.03 mbsf. Lateral ice movement: 9.87 m to east from 17 Oct to 23 Nov. HQ core to 199.31 mbsf. NQ core to 624.15 mbsf. 13.03 to 45.97 mbsf, 11.29 m (34%) partially following CRP-2. 45.07 to 624.15 mbsf, 548.67 m (95%) new hole. Deepest core-lithology: hard sandy siltstone. Deepest core-age: earliest Oligocene (ca. 33 Ma on diatoms, nannofossils and dinoflagellates)
Comment:
x = present
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Depth, top/min | Depth top | m | van der Meer, Jaap | ||
| 4 | Depth, bottom/max | Depth bot | m | van der Meer, Jaap | ||
| 5 | Sample code/label | Sample label | van der Meer, Jaap | |||
| 6 | Lithologic unit/sequence | Unit | van der Meer, Jaap | |||
| 7 | Lithology/composition/facies | Lithology | van der Meer, Jaap | |||
| 8 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition general crystalline | ||
| 9 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition sandstone | ||
| 10 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition claystone | ||
| 11 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition carbonates | ||
| 12 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition basalt | ||
| 13 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition tephra | ||
| 14 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition ic | ||
| 15 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition mollusc fragments | ||
| 16 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition microfossil | ||
| 17 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition sponge spicule | ||
| 18 | Lithology/composition/facies | Lithology | van der Meer, Jaap | Skeleton composition diatom | ||
| 19 | Size | Size | µm | van der Meer, Jaap | Skeleton modal size | |
| 20 | Clast shape | Clast shape | van der Meer, Jaap | Skeleton shape angular | ||
| 21 | Clast shape | Clast shape | van der Meer, Jaap | Skeleton shape subangular | ||
| 22 | Clast shape | Clast shape | van der Meer, Jaap | Skeleton shape subrounded | ||
| 23 | Clast shape | Clast shape | van der Meer, Jaap | Skeleton shape rounded | ||
| 24 | Distribution | Distr | van der Meer, Jaap | Skeleton distribution even | ||
| 25 | Distribution | Distr | van der Meer, Jaap | Skeleton distribution uneven | ||
| 26 | Distribution | Distr | van der Meer, Jaap | Plasma | ||
| 27 | Structure | Structure | van der Meer, Jaap | voids | ||
| 28 | Structure | Structure | van der Meer, Jaap | other bedding | ||
| 29 | Structure | Structure | van der Meer, Jaap | other shear | ||
| 30 | Structure | Structure | van der Meer, Jaap | other brecciation | ||
| 31 | Structure | Structure | van der Meer, Jaap | other turbates | ||
| 32 | Structure | Structure | van der Meer, Jaap | other parallel | ||
| 33 | Structure | Structure | van der Meer, Jaap | other finegrained casing | ||
| 34 | Structure | Structure | van der Meer, Jaap | other lineation | ||
| 35 | Fabric | Fabric | van der Meer, Jaap | Plasma fabric skelsepic | ||
| 36 | Fabric | Fabric | van der Meer, Jaap | Plasma fabric lattisepic | ||
| 37 | Fabric | Fabric | van der Meer, Jaap | Plasma fabric masepic | ||
| 38 | Fabric | Fabric | van der Meer, Jaap | Plasma fabric unistrial | ||
| 39 | Fabric | Fabric | van der Meer, Jaap | Plasma fabric omnisepic | ||
| 40 | Diagenesis | Diagenesis | van der Meer, Jaap | Diagenesis carbonates | ||
| 41 | Diagenesis | Diagenesis | van der Meer, Jaap | Diagenesis silicium | ||
| 42 | Diagenesis | Diagenesis | van der Meer, Jaap | Diagenesis gypsium | ||
| 43 | Diagenesis | Diagenesis | van der Meer, Jaap | Diagenesis sulfide | ||
| 44 | Interpretation | Interpretation | van der Meer, Jaap | Micromorphological indications for grounded ice | ||
| 45 | Interpretation | Interpretation | van der Meer, Jaap | Deformation acc. to Passchier (2000) | ||
| 46 | Sequence identifier | SeqID | van der Meer, Jaap |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
581 data points
Data
| 1 Event | 2 Depth sed [m] | 3 Depth top [m] | 4 Depth bot [m] | 5 Sample label | 6 Unit | 7 Lithology | 8 Lithology (Skeleton composition general ...) | 9 Lithology (Skeleton composition sandstone) | 10 Lithology (Skeleton composition claystone) | 11 Lithology (Skeleton composition carbonates) | 12 Lithology (Skeleton composition basalt) | 13 Lithology (Skeleton composition tephra) | 14 Lithology (Skeleton composition ic) | 15 Lithology (Skeleton composition mollusc ...) | 16 Lithology (Skeleton composition microfossil) | 17 Lithology (Skeleton composition sponge s...) | 18 Lithology (Skeleton composition diatom) | 19 Size [µm] (Skeleton modal size) | 20 Clast shape (Skeleton shape angular) | 21 Clast shape (Skeleton shape subangular) | 22 Clast shape (Skeleton shape subrounded) | 23 Clast shape (Skeleton shape rounded) | 24 Distr (Skeleton distribution even) | 25 Distr (Skeleton distribution uneven) | 26 Distr (Plasma) | 27 Structure (voids) | 28 Structure (other bedding) | 29 Structure (other shear) | 30 Structure (other brecciation) | 31 Structure (other turbates) | 32 Structure (other parallel) | 33 Structure (other finegrained casing) | 34 Structure (other lineation) | 35 Fabric (Plasma fabric skelsepic) | 36 Fabric (Plasma fabric lattisepic) | 37 Fabric (Plasma fabric masepic) | 38 Fabric (Plasma fabric unistrial) | 39 Fabric (Plasma fabric omnisepic) | 40 Diagenesis (Diagenesis carbonates) | 41 Diagenesis (Diagenesis silicium) | 42 Diagenesis (Diagenesis gypsium) | 43 Diagenesis (Diagenesis sulfide) | 44 Interpretation (Micromorphological indication...) | 45 Interpretation (Deformation acc. to Passchier...) | 46 SeqID |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CRP-2 | 13.660 | 13.61 | 13.71 | VAN.1 C.586 | 2.1 | brecciated diamict | x | x | x | x | x | x | x | 150 | x | x | even | x | x | in intraclast | in intraclast | in intraclast | x | at depth 12-16 m | 1 | ||||||||||||||||||||
| CRP-2 | 19.280 | 19.23 | 19.33 | VAN.2 C.587 | 2.1 | massive diamict | x | x | x | x | x | x | x | x | 150 | x | x | uneven | diffuse | x | x | in intraclast | absent | 1 | |||||||||||||||||||||
| CRP-2 | 25.680 | 25.63 | 25.73 | VAN.3 C.588 | 2.2 | laminated diamict | x | x | x | x | x | x | x | x | 200 | x | x | even | x | x | in intraclast | x | in intraclast | x | 2 | ||||||||||||||||||||
| CRP-2 | 33.140 | 28.09 | 38.19 | VAN.4 C.589 | 3.1 | deformed diamict | x | x | x | x | x | x | x minor amounts | 100 | x | x | x | uneven | in intraclast | x | x | x | x | x | absent | 3 | |||||||||||||||||||
| CRP-2 | 40.720 | 40.67 | 40.77 | VAN.5 C.590 | 3.1 | deformed mixture | x | x minor amounts | x | x | 150 | x | x | x | x | uneven | x | minor amounts | in intraclast | x | x | x | absent | 4 | |||||||||||||||||||||
| CRP-2 | 44.600 | 44.55 | 44.65 | VAN.6 C.591 | 3.1 | brecciated sand | x | x | x | <50 | x | x | absent | compound packing voids | x | in intraclast | in intraclast | x | absent | proglacial icepush at depth 44.91-47.87 m | 4 | ||||||||||||||||||||||||
| CRP-2 | 47.300 | 47.25 | 47.35 | VAN.7 C.592 | 3.1 | brecciated sand | x | x | x | <50 | x | absent | compound packing voids | in intraclast | in intraclast | x | absent | 4 | |||||||||||||||||||||||||||
| CRP-2 | 48.770 | 48.72 | 48.82 | VAN.8 C.593 | 4.1 | massive diamict | x | x | x | x | x | x | 150 | x | x | x | even | x | minor amounts | in intraclast | x | 4 | |||||||||||||||||||||||
| CRP-2 | 53.760 | 53.71 | 53.81 | VAN.9 C.594 | 4.1/5 | transition diamict to mud/sandstone; brecciated | x | x | x | x | x minor amounts | <100 | x | x | x | x | uneven | in intraclast | x | vertical structure | x | x | absent | subglacial shear at depth 50-71 m | 5 | ||||||||||||||||||||
| CRP-2A | 78.070 | 78.02 | 78.12 | VAN.10 C.595 | 6.1 | diamict | x | x | x | x | x | 125 | x | x | x | x | uneven | compound packing voids | wavy | x | x | absent | 6 | ||||||||||||||||||||||
| CRP-2A | 79.710 | 79.66 | 79.76 | VAN.11 C.596 | 6.1 | disrupted lenses | x | x | x | x | x | x | x | 100 | x | x | uneven | diffuse | not clear | minor amounts | in intraclast | in intraclast | x | x | absent | 6 | |||||||||||||||||||
| CRP-2A | 81.130 | 81.08 | 81.18 | VAN.12 C.597 | 6.2 | stratified diamict | x | x | x | x | x | 150 | x | x | uneven | diffuse | not clear | minor amounts | in intraclast | x | x | absent | 6 | ||||||||||||||||||||||
| CRP-2A | 86.130 | 86.08 | 86.18 | VAN.13 C.598 | 6.2 | massive diamict | x | x | x | x | x minor amounts | 150 | x | x | x | even | not clear | x | minor amounts | x | x | 6 | |||||||||||||||||||||||
| CRP-2A | 91.255 | 91.20 | 91.31 | VAN.14 C.599 | 6.3 | deformed stratification | x | x | x | x minor amounts | x | x | 125 | x | x | x | uneven | compound packing voids | inclined | not clear | minor amounts | x | in intraclast | x | x | subglacial shear ? at depth 90.67-92.86 m | 6 | ||||||||||||||||||
| CRP-2A | 96.900 | 96.85 | 96.95 | VAN.15 C.600 | 7.1 | diamict | x | x | 200 | x | x | x | uneven | inclined | x | minor amounts | in intraclast | absent | in situ fracturing at depth 93.85-96.64 m | 7 | |||||||||||||||||||||||||
| CRP-2A | 104.570 | 104.51 | 104.63 | VAN.16 C.601 | 7.1 | diamict with intraclasts | not available | not available | |||||||||||||||||||||||||||||||||||||
| CRP-2A | 108.750 | 108.70 | 108.80 | VAN.17 C.602 | 7.1 | laminated diamict | x | x | x | x | 200 | x | x | even | x | x | x | absent | 7 | ||||||||||||||||||||||||||
| CRP-2A | 121.870 | 121.82 | 121.92 | VAN.18 C.603 | 8.1 | massive diamict | x | x | x | x | x | 250 | x | x | x | x | uneven | x | not clear | minor amounts | x | minor amounts | minor amounts | minor amounts | minor amounts | in intraclast | strongly x | 8 | |||||||||||||||||
| CRP-2A | 122.420 | 122.37 | 122.47 | VAN.19 C.604 | 8.1 | deformed mix | x | x | x | x | x | x | x | 150 | x | x | x | x | uneven | compound packing voids | x | not clear | x | x, comet structure | x | in intraclast | strongly x | 8 | |||||||||||||||||
| CRP-2A | 129.665 | 129.62 | 129.71 | VAN.20 C.605 | 8.1 | deformed soft sediment | x | x | 100 | x | x | uneven | x | x | x | in intraclast | x | in situ fracturing at depth 131-132 m | 8 | ||||||||||||||||||||||||||
| CRP-2A | 184.740 | 184.69 | 184.79 | VAN.21 C.606 | 8.4 | disturbed bedding, grading to massive | x | x | x | x | 250 | x | x | even | x | x | x | in intraclast | in intraclast | x | x | mass-gravity flow at depth 183.35-185.95 m | 9 | ||||||||||||||||||||||
| CRP-2A | 196.510 | 196.47 | 196.55 | VAN.22 C.607 | 9.3 | brecciated diamict | x | x | 100 | x | x | uneven | x | in intraclast | x | x | absent | 10 | |||||||||||||||||||||||||||
| CRP-2A | 203.700 | 203.65 | 203.75 | VAN.23 C.608 | 9.3 | diamict | x | x | x | x | x | x minor amounts | x | <100 | x | x | x | x | uneven | x | minor amounts | minor amounts | in intraclast | absent | 10 | ||||||||||||||||||||
| CRP-2A | 227.850 | 227.80 | 227.90 | VAN.24 C.609 | 9.3 | diamict | x | x | x | <100 | x | x | even | diffuse | minor amounts | x | minor amounts | in intraclast | not clear | x | x | 10 | |||||||||||||||||||||||
| CRP-2A | 238.840 | 238.80 | 238.88 | VAN.25 C.610 | 9.3 | diamict with intercalated sandstone | x minor amounts | x | 150 | x | x | x | x | x | uneven | x | x | x | in intraclast | x | 10 | ||||||||||||||||||||||||
| CRP-2A | 298.860 | 298.80 | 298.92 | VAN.26 C.611 | 10.1 | laminated diamict | x | x | x | 150 | x | x | uneven | x | x | x | x | x | x | in intraclast | strongly x | (clastic dyke) at depth 297.4 m | 11 | ||||||||||||||||||||||
| CRP-2A | 300.050 | 300.00 | 300.10 | VAN.27 C.612 | 10.1 | laminated diamict | x | x | x | x | 250 | x | x | x | x | uneven | x | x | x | minor amounts | in intraclast | x | 11 |